Drainage grate



FIG. 1 is a left perspective view of a drainage grate showing our new design;

FIG. 2 is a right perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a left-side elevation view thereof;

FIG. 7 is a front elevation view thereof; and,

FIG. 8 is a rear elevation view thereof.

The broken line showing is included for the purpose of illustrating portions of the article and forms no part of the claimed design. 

CLAIM The ornamental design for a drainage grate, as shown and described. 